MHD seed recovery and regeneration: Final report
The TRW Econoseed MHD Seed Regeneration Process is based on the reaction of calcium formate with potassium sulfate spent seed from an MHD electric power generation plant. The objectives of this Phase I project are to test the process at bench-scale, design a proof of concept (POC) test plant, plan and cost a Phase II project for a POC plant evaluation and prepare a conceptual design of a 300 MW (t) commercial plant. The results of the project are as follows: (1) each of the unit operations is demonstrated and the (2) data are incorporated into a POC plant design and project cost, as well as a 300 MW (t) commercial retrofit plant design and cost estimate. Specific results are as follows: (1) calcium formate can be produced at 100% yield in a total retention time of less than 5 minutes, (2) utilizing the calcium formate, spent seed can quantitatively be converted to potassium formate, potassium carbonate or mixtures of these with potassium sulfate as per the commercial design without measurable loss of potassium to insolubles at a total retention time under 20 minutes and ambient pressure, (3) the solid rejects form the process meet RCRA EP Toxicity requirements for safe disposal, and (4) filtration and evaporation data, as well as reaction data cited above, show that the Econoseed technology is ready for scale up to POC plant scale. Economics forecast studies show that the total cost per unit of potassium for seed regeneration by the Econoseed Process is in the range of $0.23 to $0.27/lb, a cost which is less than half the potassium cost of $0.63/lb for purchasing new potassium carbonate. 4 refs., 47 figs., 41 tabs.
- Research Organization:
- TRW Space and Technology Group, Redondo Beach, CA (USA). Applied Technology Div.
- DOE Contract Number:
- AC22-87PC79672
- OSTI ID:
- 5951738
- Report Number(s):
- DOE/PC/79672-T1; ON: DE89002711
- Country of Publication:
- United States
- Language:
- English
Similar Records
Econoseed process for regeneration of spent seed from magnetohydrodynamics power generation
Seed regeneration system integration issues and economics
Related Subjects
300100* -- Direct Energy Conversion-- MHD Generators
AEROSOL WASTES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ASHES
BENCH-SCALE EXPERIMENTS
CALCIUM COMPOUNDS
CARBOXYLIC ACID SALTS
CHEMICAL ANALYSIS
DESIGN
DIAGRAMS
DIRECT ENERGY CONVERTERS
DOCUMENT TYPES
ECONOMICS
FLOWSHEETS
FLY ASH
FORMATES
IMPURITIES
MHD GENERATORS
POTASSIUM COMPOUNDS
PROGRESS REPORT
RECOVERY
RESIDUES
RETROFITTING
SEED RECOVERY
SPENT SEED
WASTES